golden rice : a biofortification catalyst › abic2006 › pdf › speakers › jorgemayer.pdf · a...

Jorge E. Mayer, Jorge E. Mayer, PhD, MIP (Law)PhD, MIP (Law)Golden Rice Golden Rice Project ManagerProject ManagerCampus Technologies FreiburgCampus Technologies Freiburg

ABIC 2006ABIC 2006Melbourne, 8 August 2006Melbourne, 8 August 2006

Golden Rice Golden Rice : : A A biofortificationbiofortification catalystcatalyst

Golden Ricegoldenrice.org

One of eight UN MDGs is to reduce under-five child mortality by two-thirds

between 1990 and 2015

• Global child deaths estimated at 10.8 million for the year 2000.

• 90% of child deaths concentrated in 42 countries.• Breastfeeding, complementary feeding, vitamin A,

and zinc supplemention could save 2.4 million children each year (25% of total deaths).

• Vitamin A alone could save 225,000 children (proportion of all deaths 2%).

• Zinc supplementation could save 459,000 (5%).

Jones et al (2003) The Lancet 362:65-70

Clinical deficiency symptoms in all developing countries !!!

0

5

10

15

20

25

30

35

40

45

50

Mor

talit

y (p

er 1

,000

chi

ld in

terv

als)

Sommer et al (1983) Lancet ii:585

Normal

Night blindness

Bitot’sspot

Nightblindness

+ Bitot’sspot

Xerophthalmia severity

VAD and children mortality: Children’s eyes tell a sad story

Symptoms and severity of these eye diseases give us direct informationabout the vitamin A status of the affected children. Severe cases correlate with a 900 percent mortality increase!

Daily nutrient intake in rural Bangladesh

84 % Rice

Onesided diets are typical for SE Asia. They are dictated by tradition but also by poverty. Rice is cheap, and most importantly, it is amenable to long-term storage, as opposed to fruits and vegetables.

Vegetables Animal

sources

Source: H. Bouis, HarvestPlus

Interventions• Education • Industrial fortification (e.g. butter, oil, flour)• Supplementation (capsules)

Limitations• Distribution (10-thousands of helpers needed)• Trained medical personnel lacking• Centralised food processing required• Limited applicability (does not reach remote areas)• Economically unsustainable

(> US$2 Mio per country and year)

Strategies and their drawbacks

Too many children don’t receive any supplementation

The State of the World’s Children 2005 - UNICEF

0102030405060708090

100

Bangla

desh

Bolivia

Domini

can R

ep

India

Indon

esia

Nepal

PeruPhil

ippine

sUga

nda

Vietna

m

Perc

ent o

f chi

ldre

n no

t cov

ered

In average 45 percent of the children don’t get their annual vitamin A capsules

In average 45 percent of the children don’t get their annual vitamin A capsules

• One-off investment.• Minimal maintenance costs after

initial R&D phase.• Biofortified seeds can be distri-

buted worldwide and introgressed into locally adapted varieties.

• Biofortification is compatible with ongoing conventional fortification, supplementation and education programmes.

Cost efficiency of biofortification

Carotene desaturase (CRTI)

Phytoene synthase (PSY)

Filling a gap

Golden Ricegoldenrice.org

GR1: NarcissusGR2: Zea mays

Erwinia uredovora

Reactivation of a dormant metabolic pathway assisted by two introduced genes.

Beta-carotene

Prov

itam

in A

35

1.6

0 µg/g

While opponents relied on sensa-tionalism without hard data ...

... scientists introduced further improvements!

Paine et al (2005) Nature Biotechnology

24:1

12:1

2:1

RE

The body can utilize only 1 in 24 provitamin A molecules from

green leafy vegetables

Golden RiceGolden Rice

Vitamin A status

Popu

latio

nVitamin requirements

Intake with biofortification

Intake withoutbiofortification

Improving the population’s health status

Golden Rice could reduce VAD by more than half

Ex-ante socio-economic impact studies for the Philippines, India, Bangladesh and SE Asia:Zimmermann & Qaim 2004; Zimmermann & Ahmed 2006; Stein, Sachdev & Qaim 2006; Anderson et al 2004

50 percent RDI is enough to prevent VAD! People with 40 percent caloric intake from rice would be protected.

400g

200g

H. Bouis, HarvestPlus

Golden Rice

Vegetables

Fish andMeat

Vitamin A uptake from foodstuff in rural Bangladesh with Golden Rice

How long still?

• Golden Rice has been around since 1999. • Because of a wrong inter-pretation of the so-callled precautionary principle, it could take another six years before Golden Rice reaches the farmers‘fields. • While millions of children are dying unnecessarily year after year, every imaginable, yet improbable danger is being overrated and the “benefactory principle“ totally ignored.

Product dev time frame

Bac

kgro

und:

Firs

t Gol

den

Ric

efie

ld tr

ial S

ept 2

004

1992 – Golden Rice POC phase – 1999

Licence Agreement 2001

Transfer to indica rice varieties 2002

Regulatory clean events ........

GR2 at >35 µg/g carotenoids 2004

US field trials agronomically OK 2004+5

Bioinformatic analysis OK 2006

Bioavailability in humans 2006

Field trials in Asia 2007

Regulatory approval 2008 ?

Varietal registration 2010 ?

De

velo

pm

en

t o

f G

old

enR

ice

Golden Ricegoldenrice.org

A Golden Deal• The inventors* have assigned

their rights to Golden Rice to Syngenta.

• In exchange, Syngenta has provided the inventors access to required technologies and a humanitarian licence that allows them to deliver Golden Rice to smallholders in developing countries free of charge.

• The farmers can replant their harvested seeds and trade them locally.

* Ingo Potrykus (ETH Zürich) and Peter Beyer (Univ of Freiburg)

Discovery and development of micronutrient-rich germplasm

TIME

Ex ante

Ex post

End user activitiesEnd user activitiesEnd user activities

Diagnostic analyses

Activitiesand

Milestones

Increased intake and improved

micronutrient status

IMPACT ANALYSES

Develop products and markets

Farmer adoptionExtension Seed programs systems Demand

creationMonitoring and

feedback

Adaptive, participatory breeding and varietal selection

Determine retention, bioavailability, efficacy

Sweetpotato South Africa TrialSupervised feeding; 125 g x 5 d/wk for 10.5 wk; 1030 µg RAE OFSP vs 0 µg RAE WFSP; 90% compliance; 250% RDA

Micronutrient deficiencies, the hidden hunger worldwide

MicronutrientsProvitamin A

IronZinc

Protein Vitamin E

Rice

Sorghum

Cassava

Bananas

Grand Challenges in Global Health

Golden Rice has inspired new approaches to biofortification

HarvestPlus CGIAR

Rice

Maize

Wheat

Cassava

Beans

Sweetpotato

International programmes, most notably those supported by the Bill & Melinda Gates Foundation, are working towards the biofortification of the most important basic foodstuffs of developing countries using conventional and modern methods.

The principle of provitamin A The principle of provitamin A The principle of provitamin A production is applicable to otherproduction is applicable to otherproduction is applicable to othercrops, like potatocrops, like potatocrops, like potato

Without provitamin A With provitamin A

ProVitaMinRice Project Objectives• To introgress the GR trait into locally

adapted rice cultivars (IRRI, PhilRice, CLRRI).

• To combine GR with high iron rice lines.• To combine GR with high-quality protein

rice (CUHK).• To engineer GR to produce vitamin E

(UoF).• To generate knowledge on the

biochemistry of iron bioavailability (BCM, MSU).

Expected deliverables: Transgenic rice lines with higher concentrations of combined micronutrients and HQ protein; QTLs for iron bioavailability.

The breeding component

Marker-assisted introgression of improved Golden Rice into locally adapted rice cultivars with emphasis on high iron/zinc varieties in combination with HQP rice lines.

... in conjunction with rice germplasm screening for iron / zinc dense materials.

IRRI, CLRRI, PhilRice

High-quality proteinI: Lysine-Rich Protein (LRP) gene from winged bean.

MGVFTYEDETTSPVAPAILYKAIVKDADNIFPKAVDSFKSVEIVEGNGGPGTIKKISFVEDGESKFVLHKIESIDEANLGYSYSIVGGAALPDTVEKITFESKLSAGPSGGSVGKLTVKYQTKGDAEPNEELKVGKAKGDALFKAVEAYLLAHPEYN 10.8 mol % Lys

LRP gene

II. Additional copies of a homologous, lysine-rich glutelin gene.

III. Enhancement of the synthesis and accumulation of free lysine.

Chinese University of Hong Kong

Humanitarian Board

IndiaPhilippinesVietnamChinaBangladeshIndonesiaNepalSouth Africa

HarvestPlus

Integration and extension

GR Network

IRRI

Golden Rice Project

Humanitarian Board

ProVitaMinRice

IndiaPhilippinesVietnamChinaBangladeshIndonesiaNepalSouth Africa

DBTPhilRice

HarvestPlus

Integration and extension

End useractivities

CUHKBCMMSU

HumBoIndia

GR Network

IRRI

Golden Rice Project

CLRRI

Golden Ricegoldenrice.org

Golden Rice is a sustainable solution, and compatible with tradition!